Convert ICN to FITS

Convert ICN to FITS without uploading files anywhere. reaConverter works entirely on your PC — fast, private, and handles thousands of files at once.

Looking to change ICN files to FITS format? reaConverter makes it simple — add your files, select output format, and convert entire folders in one click. Runs entirely on your hardware for maximum speed — no waiting for uploads or server queues.

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How to Convert Multiple ICN Files to FITS?

1. Download and Install reaConverter

First, grab reaConverter from the download button below. Installation is fast, and the software runs offline — no account or signup needed.

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Install reaConverter

2. Load your ICN files

Start reaConverter and add your .icn files. The software processes everything locally, so your files never leave your computer.

Use drag-and-drop, folder browser, or right-click conversion from Explorer.

Load your ICN files into reaConverter

3. Select FITS as output format

Select FITS from 700+ supported output formats. Choose your destination folder and adjust settings to match your needs.

Select FITS as output format

4. Start ICN to FITS conversion

Click Convert to start the batch. reaConverter processes files quickly and shows you the status of each one.

Start Conversion

Once done, reaConverter shows a summary. Click 'Show converted files' to jump straight to your FITS output.

ICN to FITS Converter

reaConverter offers the fastest, simplest solution for converting your ICN files into FITS in seconds - all files processed on your PC for maximum privacy and speed.

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Do more with your files

Converting ICN files for use in a workflow? reaConverter offers many ways to process files, so you can customize them according to your requirements.

Our range of editing options includes auto-processing options such as auto-rotate, auto-crop, watermarking and more. Change Color Space, copy Metadata, set DPI, manage ICC Profile, control Bit Depth.

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Image editing

User Reviews

Average User Rating:
Last updated on January 17, 2026
"reaConverter makes FITS conversion incredibly easy. We batch convert astronomical images to standard formats for presentations and analysis, all automated through the command-line. It’s fast, reliable, and handles large datasets without issues."
Laura N.
Laura N.
Astrophysics Research Assistant
"Essential for our astroimaging pipeline! reaConverter perfectly handles FITS files from our research telescope, preserving all WCS coordinates and photometric data during batch conversion to TIFF. Now we process 100+ deep-sky exposures nightly without losing critical metadata for our exoplanet studies!"
Joseph Wilson
Joseph Wilson
Satisfied Customer
"The step-by-step video makes conversion foolproof. I'd recommend this to my grandma - it's that well-explained!"
DeShawn M. Thompson
DeShawn M. Thompson
Happy User
"I'm really impressed with this software - it converts files between formats incredibly fast!"
Lin Zhang
Lin Zhang
Happy User
"I firmly believe working with JPEG — the universal format supported by all devices and apps—is the wisest choice. reaConverter handles these conversions flawlessly."
Ava Thomas
Ava Thomas
Happy User
"An excellent program! I use it regularly in my work - it supports nearly every file format imaginable. The interface is intuitive and runs flawlessly every time."
Roger Cook
Roger Cook
Happy User

ICN to FITS Conversion: FAQ

What are ICN files?

ICN files most likely contain images associated with program icons used on the Windows platform or with graphics for buttons. The ICN format is also known as a RIPTerm or RIP Icon format, where RIP stands for "Remote Imaging Protocol". ICNs are 16-color bitmap images and are generally considered rare.

What are FITS files?

The FITS (Flexible Image Transport System) format is a standard format used particularly for storing, transferring and processing scientific images from fields such as astronomy. FITS was first launched as an open standard in the early 1980s and has gone through several subsequent upgrades. FITS files contain not just images, but also data related to photometry and spatial calibration, and information about the origin of the image. Similar formats include FIT and FTS.

Can reaConverter convert ICN to FITS?

Yes! reaConverter instantly converts .icn to .fits with perfect quality preservation. With its batch processing feature, you can convert multiple files at once in just a few clicks. You can even convert images directly from Windows Explorer using the right-click menu — fast and convenient.

Can I convert ICN to FITS online?

If you only need to convert a few ICN files to FITS format, feel free to try our free online free online ICN to FITS converter — perfect for small batches with no installation needed!

How can I turn ICN files into FITS on my computer?

The best way to change ICNs to FITSs on your PC is to install a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch files conversions, including conversion from ICN to FITS.

How can I automate ICN to FITS files conversion?

reaConverter supports all the most useful automation features such as right-click сonversion and Watch Folders for the most efficient automated files conversion in any software of this type.

Is there a way to convert ICN files to FITS using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line icn to fits converter for batch processing.

What else can I do with reaConverter?

Convert CAD formatsSet picture bit depthSet file dateConvert GIS filesChange format settings

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